Re: [microblaze-uclinux] PWM Signals and uClinux

[John Williams <jwilliams@xxxxxxxxxxxxxx>]

Hi Brian,

Brian Estrada wrote:
> Has anyone had experience with creating pulse width modulated signals 
> with uClinux and a Spartan 3E starter board? Or even just generating a 
> high signal from one of the onboard digital-to-analog converters or 
> through SPI. If so, I would be very grateful for some example code or a 
> point in the right direction. Thanks.

A simple char device driver over an xps_timer in PWM node wouldn't be 
difficult to accomplish.  The PWM output would itself be hardware 
accurate in terms of duty cycle, however changes in the PWM amplitude 
would be subject to userspace/kernel latencies.

Broadly what are you trying to achieve?

Regards,

John



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